23789 has 2 divisors, whose sum is σ = 23790. Its totient is φ = 23788.

The previous prime is 23773. The next prime is 23801. The reversal of 23789 is 98732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16900 + 6889 = 130^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 23789 - 2⁴ = 23773 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11894 + 11895.

It is an arithmetic number, because the mean of its divisors is an integer number (11895).

2²³⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

23789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23789 is an equidigital number, since it uses as much as digits as its factorization.

23789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 23789 is about 154.2368308803. The cubic root of 23789 is about 28.7602106140.

The spelling of 23789 in words is "twenty-three thousand, seven hundred eighty-nine".